WO2017049852A1 - Device, method, and base station for detecting whether antenna is in place - Google Patents
Device, method, and base station for detecting whether antenna is in place Download PDFInfo
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- WO2017049852A1 WO2017049852A1 PCT/CN2016/073963 CN2016073963W WO2017049852A1 WO 2017049852 A1 WO2017049852 A1 WO 2017049852A1 CN 2016073963 W CN2016073963 W CN 2016073963W WO 2017049852 A1 WO2017049852 A1 WO 2017049852A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
Definitions
- the present invention relates to the field of communications, and in particular, to an antenna in-position detecting apparatus, method, and base station.
- the existing wireless base station antenna connection state that is, whether the position is detected is obtained by standing wave measurement, and the connection state between the base station and the antenna is determined by the magnitude of the standing wave value.
- This method is widely used in various wireless transmitters. As shown in Figure 1.
- standing wave detection is generally implemented by feedback predistortion channel or by directional coupler plus detection circuit, but no matter which implementation method, more circuits are added, it is necessary to occupy the layout area of the circuit board, and increase the base station. cost.
- the transmission power is small, the linearity index is not high, and there is no feedback predistortion channel, and the microstation has high requirements on volume and cost.
- the directional coupler is added to the detection wave tube circuit to realize standing wave detection. The solution is also not suitable, so the state detection of the microstation antenna becomes a problem.
- the invention provides an antenna in-position detecting device, method and base station, which can accurately realize the detection of the position of the antenna, and has the characteristics of simple structure, stable operation, small occupied area and wide application range.
- the invention provides the following solutions:
- An embodiment of the present invention provides an antenna in-position detecting apparatus, including:
- the first end is connected to the antenna, and the second end is connected to the short circuit of the ground, and the short-circuit line presents an open state to the radio frequency signal, and presents a short-circuit state to the DC signal;
- a first end is respectively connected to the first end of the capacitor, the antenna, and the second end is connected to the power supply by a voltage dividing module;
- a detecting module connected to the third end of the voltage dividing module, wherein the detecting module determines whether the antenna is in position by detecting the voltage of the third end.
- the length of the short-circuit line is a quarter wavelength or a quarter-wavelength plus an integer multiple of a half-wavelength, the wavelength being the wavelength of the radio frequency signal that the antenna needs to transmit.
- the voltage dividing module comprises a first resistor and a second resistor; wherein:
- the first end of the first resistor is respectively connected to the first end of the capacitor and the antenna, and the second end of the first resistor is connected to the third end;
- the first end of the second resistor is connected to the third end, and the second end of the second resistor is connected to the power source.
- the resistances of the first resistor and the second resistor are greater than the impedance of the radio frequency signal generating circuit; and/or
- the resistance of the second resistor is greater than the resistance of the first resistor.
- the second end of the capacitor is connected to the radio frequency signal transmitting unit in the base station.
- the voltage of the power source is 2.5V
- the resistance of the first resistor is 1K ohms
- the resistance of the second resistor is 20K ohms
- the capacitance of the capacitor is 1000pf.
- the embodiment of the invention further provides an antenna in-position detection method, including:
- determining whether the antenna is in place based on a relationship between the voltage value and a preset value includes:
- the method further includes: before acquiring the voltage value of the third end of the voltage dividing module:
- the preset value is greater than a voltage of the third end when the detected antenna is in position, and is less than a voltage of the third end when the detected antenna is not in position.
- the embodiment of the present invention further provides a base station, which may specifically include the antenna in-position detecting apparatus provided by the foregoing embodiment of the present invention.
- An embodiment of the present invention further provides an antenna in-position detecting device, including:
- a memory for storing processor executable instructions
- processor is configured to:
- Embodiments of the present invention also provide a non-transitory computer readable storage medium having stored therein instructions that, when executed by a processor, cause the processor to implement an antenna in-position detection method,
- the method includes the following steps:
- the antenna in-position detecting device, method and base station provided by the invention provide a short-circuit line, a voltage dividing module, a detecting module, and the detecting module detects the voltage of the third end of the voltage dividing module to determine Whether the antenna is in place. It can accurately detect the position of the antenna, and has the characteristics of simple structure, stable operation, small occupied area and wide application range.
- FIG. 1 is a schematic structural view of a conventional standing wave detecting circuit
- FIG. 2 is a schematic structural diagram 1 of an antenna in-position detecting apparatus according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram 2 of an antenna in-position detecting apparatus according to an embodiment of the present invention.
- FIG. 4 is a schematic flowchart 1 of an antenna in-position detecting method according to an embodiment of the present invention.
- FIG. 5 is a schematic flowchart 2 of an antenna in-position detection method according to an embodiment of the present invention.
- the embodiment of the present invention provides an antenna in-position detecting device. As shown in FIG. 2, the device may specifically include:
- the first end is connected to the antenna 1, and the second end is connected to the short-circuit line 2, and the short-circuit line 2 presents an open state to the radio frequency signal, and presents a short-circuit state to the DC signal;
- the first end (node B) is respectively connected to the first end of the capacitor C, the antenna 1, and the second end is connected to the power supply (VCC) by the voltage dividing module 3;
- the detecting module 4 is connected to the third end (node A) of the voltage dividing module 3, and the detecting module 4 determines whether the antenna is in position by detecting the voltage of the third end of the voltage dividing module 3.
- the antenna in-position detecting device provided by the embodiment of the invention can accurately detect the position of the antenna, and has the characteristics of simple structure, stable operation, small occupied area and wide application range.
- the antenna in-position detecting device proposed by the embodiment of the present invention may specifically be composed of two parts, including a voltage dividing module 3 and a detecting module 4 of the base station portion, and a short-circuit line 2 structure of the antenna portion, wherein the short-circuit line 2 presents an open circuit to the radio frequency signal.
- the short-circuit line 2 is short-circuited, and the specific design form of the short-circuit line 2 includes a quarter-wavelength line or a quarter-wavelength plus an integral multiple of a half-wavelength.
- the combination of the above two parts makes the use of the principle of impedance transformation of the quarter-wavelength line.
- the detection module detects that the voltage at the third end of the voltage dividing module is greater than the preset value, it indicates that the antenna and the base station are connected normally, that is, the antenna is Bit, otherwise, indicates that the antenna and base station are disconnected, that is, the antenna is not in position.
- the impedance of the RF signal at the node D is obtained according to the principle of impedance transformation.
- Z L is the load impedance
- Z 0 is the characteristic impedance
- ⁇ is the wave number
- d is the length of the short-circuit line 2.
- the length of the short-circuit line 2 involved in the embodiment of the present invention is a quarter wavelength ⁇
- the wavelength is the wavelength ⁇ of the radio frequency signal that the antenna needs to transmit
- the wavelength ⁇ wave speed/frequency, wherein the frequency It is attached to the operating frequency range of the antenna.
- the quarter-wavelength line design of the antenna 1 portion ensures that the radio frequency signal transmission is not affected, and the current in-position detection can be grounded.
- the length of the above-mentioned quarter-wavelength is a better expression of the short-circuit line 2, and has the characteristics of saving short-circuit lines and reducing circuit cost.
- the length of the short-circuit line 2 may specifically be other forms such as a quarter-wavelength plus an integer multiple of a half-wavelength line, and only the short-circuit line 2 is required to open the RF signal. The state is short-circuited to the DC signal.
- the voltage dividing module 3 may specifically include a resistor R1 and a resistor R2;
- the first end of the resistor R1 is respectively connected to the first end of the capacitor C, the antenna 1 (ie, connected to the node B), and the second end of the resistor R1 is connected to the third end of the voltage dividing module 3 (ie, the node A).
- the first end of the resistor R2 is connected to the node A, and the second end of the resistor R2 is connected to the power source VCC.
- the base station output port that is, the antenna 1 is open to DC
- the resistor R2 has no current, that is, there is no voltage drop, then the point A
- the voltage is equal to the power supply VCC; when the antenna 1 is connected or in place, the DC signal is connected to the ground through the base station output port and the short-circuit line 2, that is, the quarter-wave line, forming a loop, thereby generating a current on the resistor R2.
- the size is VCC/(R1+R2), a voltage drop occurs across the resistor R2, and the voltage at point A is R1*VCC/(R1+R2).
- the detecting module 4 can determine whether the antenna is in position by detecting the voltage change at point A.
- the capacitor C is set to function as a reverse isolation in the embodiment of the present invention.
- the second end of the capacitor C can be specifically connected to the radio frequency signal transmitting unit in the base station.
- the selection of the capacitance value may be in accordance with a general RF circuit blocking capacitance design principle, for example, 1000 pf, which will not be described herein.
- the resistance of the resistor R1 Take the voltage of the power supply VCC as 2.5V, the resistance of the resistor R1 as 1K ohm, and the resistance of the resistor R2 as 20K ohm.
- the resistance of the resistor R1 and the resistor R2 needs to be as large as possible, at least larger than the impedance of the RF signal generating circuit, so that the normal operation of the RF signal generating circuit is not affected.
- the impedance of the common RF signal generating circuit is 50 ohms.
- the sum of the resistances of the resistor R1 and the resistor R2 should be much larger than 50 ohms, and the resistance of the resistor R1 is 1K ohm.
- the resistance value of R2 is 20K ohms, and the sum of the resistances of the resistors R1 and R2 is 21K ohms, which is much larger than 50 ohms, and the difference between the two is large. Therefore, the antenna in-position detection resistance provided by the embodiment of the present invention is The addition of values does not affect the matching between the base station and the antenna and the normal operation of the base station.
- the resistance of resistor R2 should be greater than the resistance of resistor R1, so as to ensure that the voltage change of node A is large enough, so that the detection module 4 can easily detect the voltage of node A.
- the voltage of node A is 2.5V.
- the detecting module 4 may be embodied as a detecting device or a detecting circuit.
- the detecting device or the circuit can not only realize the voltage detection at the power saving A, but also realize the voltage value display, the voltage value storage and the transmission. And other functions.
- the detecting module 4 is specifically disposed in the base station or integrated in the digital intermediate frequency unit in the base station.
- the antenna in-position detecting apparatus provided in the above embodiment of the present invention can perform antenna in-position detection simply and efficiently by setting a combination of devices at the base station and the antenna.
- the embodiment of the present invention further provides an antenna in-position detection method, as shown in FIG. 4, which may specifically include:
- the preset value may be determined in advance.
- the preset value X involved in the embodiment of the present invention may be greater than the voltage of the node A, which is the third end of the voltage divider module 3 when the detected antenna is in position, and is less than when the detected antenna is not in position.
- the voltage at the third end of the voltage divider module 3. For example, when the antenna is in position, the voltage at point A is 0.1190V, and when the voltage at point A is 2.5V, the preset value X can be less than 2.5V and greater than 0.1190V. In a specific embodiment, the preset value may specifically be 2V.
- the base station After the base station is powered on, first complete the initialization of the system, and then enter the loop detection process, obtain the voltage of the node A according to the preset time interval, and determine whether the voltage value is greater than a preset value, and if it is greater than the preset value, determine The antenna is not in position, and then enters the detection process again; otherwise, it determines that the antenna is in place and then enters the detection process again.
- the embodiment of the present invention further provides a base station, which may specifically include the antenna in-position detecting apparatus provided by the foregoing embodiment of the present invention.
- the base station may specifically be a radio base station such as a macro base station or a micro base station.
- the antenna in-position detecting apparatus and method of the present application can be applied to a base station by setting a short-circuit line, a voltage dividing module and a detecting module, and the detecting module detects the voltage of the third end of the voltage dividing module to determine whether the antenna is in position. Accurately realize the detection of the position of the antenna, which has the characteristics of simple structure, stable operation, small occupied area and wide application range.
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Abstract
The present invention provides a device, method, and base station for detecting whether an antenna is in place. In the present invention, whether an antenna is in place is determined by disposing a short-circuit line, a voltage dividing module, and a detection module, and then detecting a voltage of a third end of the voltage dividing module via the detection module. The present invention can accurately perform detection on an in-place condition of an antenna, and has characteristics of a simple structure, stable operation, a small occupation area, a wide application range, etc.
Description
本申请要求于2015年9月23日提交中国专利局、申请号为201510612731.6的中国专利申请的优先权,以上全部内容通过引用结合在本申请中。The present application claims priority to Chinese Patent Application No. 201510612731.6, filed on Sep. 23, 2015, the entire disclosure of which is hereby incorporated by reference.
本发明涉及通信领域,特别是涉及一种天线在位检测装置、方法及基站。The present invention relates to the field of communications, and in particular, to an antenna in-position detecting apparatus, method, and base station.
现有无线基站天线连接状态即是否在位的检测是通过驻波测量得到,通过驻波值的大小判断基站与天线的连接状况。这种方式广泛运用在各种无线发射机中。如图1所示。在宏基站中,驻波检测一般通过反馈预失真通道进行或者通过定向耦合器加检波电路实现,但不论哪种实现方式,增加的电路都比较多,需要占用电路板的布局面积,并增加基站成本。在微基站中,由发射功率较小,线性指标要求也不高,没有反馈预失真通道,且微站对体积和成本有较高的要求,通过定向耦合器加检波管电路实现驻波检测的方案也不太适用,因此微站天线的状态检测就成为一个难题。The existing wireless base station antenna connection state, that is, whether the position is detected is obtained by standing wave measurement, and the connection state between the base station and the antenna is determined by the magnitude of the standing wave value. This method is widely used in various wireless transmitters. As shown in Figure 1. In the macro base station, standing wave detection is generally implemented by feedback predistortion channel or by directional coupler plus detection circuit, but no matter which implementation method, more circuits are added, it is necessary to occupy the layout area of the circuit board, and increase the base station. cost. In the micro base station, the transmission power is small, the linearity index is not high, and there is no feedback predistortion channel, and the microstation has high requirements on volume and cost. The directional coupler is added to the detection wave tube circuit to realize standing wave detection. The solution is also not suitable, so the state detection of the microstation antenna becomes a problem.
发明内容Summary of the invention
本发明提供一种天线在位检测装置、方法及基站,可准确实现天线在位情况的检测,具有结构简单、工作稳定、占用面积小、适用范围广的特点。The invention provides an antenna in-position detecting device, method and base station, which can accurately realize the detection of the position of the antenna, and has the characteristics of simple structure, stable operation, small occupied area and wide application range.
本发明提供方案如下:The invention provides the following solutions:
本发明实施例提供了一种天线在位检测装置,包括:An embodiment of the present invention provides an antenna in-position detecting apparatus, including:
第一端与天线连接,第二端与地连接的短路线,所述短路线对射频信号呈现开路状态,对直流信号呈现短路状态;The first end is connected to the antenna, and the second end is connected to the short circuit of the ground, and the short-circuit line presents an open state to the radio frequency signal, and presents a short-circuit state to the DC signal;
第一端分别与电容第一端、天线连接,第二端与电源连接的分压模块;a first end is respectively connected to the first end of the capacitor, the antenna, and the second end is connected to the power supply by a voltage dividing module;
与分压模块第三端连接的检测模块,所述检测模块通过检测所述第三端的电压,确定天线是否在位。And a detecting module connected to the third end of the voltage dividing module, wherein the detecting module determines whether the antenna is in position by detecting the voltage of the third end.
优选的,所述短路线的长度为四分之一波长或者为四分之一波长加上二分之一波长的整数倍,所述波长为天线需要发送的射频信号的波长。Preferably, the length of the short-circuit line is a quarter wavelength or a quarter-wavelength plus an integer multiple of a half-wavelength, the wavelength being the wavelength of the radio frequency signal that the antenna needs to transmit.
优选的,所述分压模块包括第一电阻和第二电阻;其中:Preferably, the voltage dividing module comprises a first resistor and a second resistor; wherein:
所述第一电阻的第一端分别与电容第一端、天线连接,所述第一电阻的第二端与所述第三端连接;The first end of the first resistor is respectively connected to the first end of the capacitor and the antenna, and the second end of the first resistor is connected to the third end;
所述第二电阻的第一端与所述第三端连接,所述第二电阻的第二端与所述电源连接。The first end of the second resistor is connected to the third end, and the second end of the second resistor is connected to the power source.
优选的,所述第一电阻和第二电阻的阻值大于射频信号生成电路的阻抗;和/或Preferably, the resistances of the first resistor and the second resistor are greater than the impedance of the radio frequency signal generating circuit; and/or
所述第二电阻的阻值大于所述第一电阻的阻值。
The resistance of the second resistor is greater than the resistance of the first resistor.
优选的,所述电容的第二端与基站***频信号发射单元连接。Preferably, the second end of the capacitor is connected to the radio frequency signal transmitting unit in the base station.
优选的,所述电源的电压为2.5V,所述第一电阻的阻值为1K欧姆,所述第二电阻的阻值为20K欧姆,所述电容的容值为1000pf。Preferably, the voltage of the power source is 2.5V, the resistance of the first resistor is 1K ohms, the resistance of the second resistor is 20K ohms, and the capacitance of the capacitor is 1000pf.
本发明实施例还提供了一种天线在位检测方法,包括:The embodiment of the invention further provides an antenna in-position detection method, including:
按预设周期,获取分压模块第三端的电压值;Obtaining the voltage value of the third end of the voltage dividing module according to a preset period;
基于所述电压值与预设值之间的关系,确定天线是否在位。Based on the relationship between the voltage value and the preset value, it is determined whether the antenna is in position.
优选的,所述基于所述电压值与预设值之间的关系,确定天线是否在位包括:Preferably, determining whether the antenna is in place based on a relationship between the voltage value and a preset value includes:
当所述电压值大于预设值时,判断天线不在位;When the voltage value is greater than a preset value, determining that the antenna is not in position;
当所述电压值小于预设值时,判断天线在位。When the voltage value is less than the preset value, it is determined that the antenna is in position.
优选的,所述方法在获取分压模块第三端的电压值之前还包括:Preferably, the method further includes: before acquiring the voltage value of the third end of the voltage dividing module:
确定所述预设值;Determining the preset value;
所述预设值大于检测到的天线在位时所述第三端的电压,小于检测到的天线不在位时所述第三端的电压。The preset value is greater than a voltage of the third end when the detected antenna is in position, and is less than a voltage of the third end when the detected antenna is not in position.
本发明实施例还提供了一种基站,该基站具体可以包括上述本发明实施例提供的天线在位检测装置。The embodiment of the present invention further provides a base station, which may specifically include the antenna in-position detecting apparatus provided by the foregoing embodiment of the present invention.
本发明的实施例还提供了一种天线在位检测设备,包括:An embodiment of the present invention further provides an antenna in-position detecting device, including:
处理器;processor;
用于存储处理器可执行指令的存储器;a memory for storing processor executable instructions;
其中,所述处理器被配置为:Wherein the processor is configured to:
按预设周期,获取分压模块第三端的电压值;以及Obtaining the voltage value of the third end of the voltage dividing module according to a preset period;
基于所述电压值与预设值之间的关系,确定天线是否在位。Based on the relationship between the voltage value and the preset value, it is determined whether the antenna is in position.
本发明的实施例还提供了一种非易失性计算机可读存储介质,其中存储有指令,所述指令在由处理器执行时使所述处理器实施一种天线在位检测方法,所述方法包括以下步骤:Embodiments of the present invention also provide a non-transitory computer readable storage medium having stored therein instructions that, when executed by a processor, cause the processor to implement an antenna in-position detection method, The method includes the following steps:
按预设周期,获取分压模块第三端的电压值;以及Obtaining the voltage value of the third end of the voltage dividing module according to a preset period;
基于所述电压值与预设值之间的关系,确定天线是否在位。Based on the relationship between the voltage value and the preset value, it is determined whether the antenna is in position.
从以上所述可以看出,本发明提供的天线在位检测装置、方法及基站,通过设置短路线,分压模块,检测模块,并由检测模块通过检测分压模块第三端的电压,以确定天线是否在位。可准确实现天线在位情况的检测,具有结构简单、工作稳定、占用面积小、适用范围广等特点。It can be seen from the above that the antenna in-position detecting device, method and base station provided by the invention provide a short-circuit line, a voltage dividing module, a detecting module, and the detecting module detects the voltage of the third end of the voltage dividing module to determine Whether the antenna is in place. It can accurately detect the position of the antenna, and has the characteristics of simple structure, stable operation, small occupied area and wide application range.
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以
根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and it can be used by those skilled in the art without creative labor.
Other figures are obtained from these figures.
图1表示现有驻波检测电路结构示意图;1 is a schematic structural view of a conventional standing wave detecting circuit;
图2表示本发明实施例提供的天线在位检测装置结构示意图一;2 is a schematic structural diagram 1 of an antenna in-position detecting apparatus according to an embodiment of the present invention;
图3表示本发明实施例提供的天线在位检测装置结构示意图二;FIG. 3 is a schematic structural diagram 2 of an antenna in-position detecting apparatus according to an embodiment of the present invention; FIG.
图4表示本发明实施例提供的天线在位检测方法流程示意图一;4 is a schematic flowchart 1 of an antenna in-position detecting method according to an embodiment of the present invention;
图5表示本发明实施例提供的天线在位检测方法流程示意图二。FIG. 5 is a schematic flowchart 2 of an antenna in-position detection method according to an embodiment of the present invention.
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例的附图,对本发明实施例的技术方案进行清楚、完整地描述。显然,所描述的实施例是本发明的一部分实施例,而不是全部的实施例。基于所描述的本发明的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions of the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is apparent that the described embodiments are part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the invention are within the scope of the invention.
除非另作定义,此处使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的组成部分。同样,“一个”或者“一”等类似词语也不表示数量限制,而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接,而是可以包括电性的连接,不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系,当被描述对象的绝对位置改变后,则该相对位置关系也相应地改变。Unless otherwise defined, technical terms or scientific terms used herein shall be taken to mean the ordinary meaning of the ordinary skill in the art to which the invention pertains. The words "first", "second" and similar terms used in the specification and claims of the present invention do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the words "a" or "an" and the like do not denote a quantity limitation, but mean that there is at least one. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate the relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship is also changed accordingly.
本发明实施例提供了一种天线在位检测装置,如图2所示,该装置具体可以包括:The embodiment of the present invention provides an antenna in-position detecting device. As shown in FIG. 2, the device may specifically include:
第一端与天线1连接,第二端与地连接的短路线2,该短路线2对射频信号呈现开路状态,对直流信号呈现短路状态;The first end is connected to the antenna 1, and the second end is connected to the short-circuit line 2, and the short-circuit line 2 presents an open state to the radio frequency signal, and presents a short-circuit state to the DC signal;
第一端(节点B)分别与电容C第一端、天线1连接,第二端与电源(VCC)连接的分压模块3;The first end (node B) is respectively connected to the first end of the capacitor C, the antenna 1, and the second end is connected to the power supply (VCC) by the voltage dividing module 3;
与分压模块3第三端(节点A)连接的检测模块4,该检测模块4通过检测分压模块3第三端的电压,确定天线是否在位。The detecting module 4 is connected to the third end (node A) of the voltage dividing module 3, and the detecting module 4 determines whether the antenna is in position by detecting the voltage of the third end of the voltage dividing module 3.
本发明实施例所提供的天线在位检测装置,可准确实现天线在位情况的检测,具有结构简单、工作稳定、占用面积小、适用范围广的特点。The antenna in-position detecting device provided by the embodiment of the invention can accurately detect the position of the antenna, and has the characteristics of simple structure, stable operation, small occupied area and wide application range.
本发明实施例所提出的天线在位检测装置具体可由两部分组成,包括基站部分的分压模块3和检测模块4,以及天线部分的短路线2结构,其中,短路线2对射频信号呈现开路,对直流信号呈现短路,短路线2的具体设计形式包括四分之一波长线或者为四分之一波长加上二分之一波长的整数倍等。上述两部分的配合使用,巧妙的利用了四分之一波长线阻抗变换的原理,当检测模块检测到分压模块第三端的电压大于预设值时,即表明天线和基站连接正常即天线在位,否则,表明天线和基站断开即天线不在位。The antenna in-position detecting device proposed by the embodiment of the present invention may specifically be composed of two parts, including a voltage dividing module 3 and a detecting module 4 of the base station portion, and a short-circuit line 2 structure of the antenna portion, wherein the short-circuit line 2 presents an open circuit to the radio frequency signal. The short-circuit line 2 is short-circuited, and the specific design form of the short-circuit line 2 includes a quarter-wavelength line or a quarter-wavelength plus an integral multiple of a half-wavelength. The combination of the above two parts makes the use of the principle of impedance transformation of the quarter-wavelength line. When the detection module detects that the voltage at the third end of the voltage dividing module is greater than the preset value, it indicates that the antenna and the base station are connected normally, that is, the antenna is Bit, otherwise, indicates that the antenna and base station are disconnected, that is, the antenna is not in position.
本发明实施例中,如图2所示,在天线与短路线2连接即天线2加入四分之一波长线
后,根据阻抗变换原理,射频信号在节点D的阻抗其中ZL为负载阻抗,Z0为特性阻抗,β为波数,d为短路线2的长度。在本发明中,ZL为0,因此D点的阻抗简化为Zin(D)=jZOtan(βd),换成波长的公式为根据此原理,在天线的结构上加上一段长度为四分之一波长或者四分之一波长加上二分之一波长的整数倍(即当 时)的短路线到地,阻抗 呈现无限大,从而并不会影响射频信号的辐射,而直流信号的阻抗为零。In the embodiment of the present invention, as shown in FIG. 2, after the antenna is connected to the short-circuit line 2, that is, after the antenna 2 is added to the quarter-wavelength line, the impedance of the RF signal at the node D is obtained according to the principle of impedance transformation. Where Z L is the load impedance, Z 0 is the characteristic impedance, β is the wave number, and d is the length of the short-circuit line 2. In the present invention, Z L is 0, so the impedance at point D is simplified to Z in (D) = jZ O tan (βd), and the formula for changing to wavelength is According to this principle, a length of one quarter wavelength or a quarter wavelength plus an integer multiple of one-half wavelength is added to the structure of the antenna (ie, when Short circuit to ground, impedance It is infinitely large so that it does not affect the radiation of the RF signal, and the impedance of the DC signal is zero.
在一具体实施例中,本发明实施例所涉及的短路线2的长度为四分之一波长λ,所述波长为天线需要发送的射频信号的波长λ,波长λ=波速/频率,其中频率隶属在天线的工作频率范围。In a specific embodiment, the length of the short-circuit line 2 involved in the embodiment of the present invention is a quarter wavelength λ, the wavelength is the wavelength λ of the radio frequency signal that the antenna needs to transmit, and the wavelength λ=wave speed/frequency, wherein the frequency It is attached to the operating frequency range of the antenna.
本发明实施例中,天线1部分的四分之一波长线设计即保证了不影响射频信号发射,同时可以将在位检测的电流接地。In the embodiment of the present invention, the quarter-wavelength line design of the antenna 1 portion ensures that the radio frequency signal transmission is not affected, and the current in-position detection can be grounded.
上述四分之一波长的长度,为短路线2的较佳表现形式,具有节省短路线、降低电路成本的特点。而在本申请的其他实施例中,短路线2的长度具体还可以为四分之一波长加上二分之一波长线的整数倍等其他形式,只需保证短路线2对射频信号呈现开路状态,对直流信号呈现短路状态即可。The length of the above-mentioned quarter-wavelength is a better expression of the short-circuit line 2, and has the characteristics of saving short-circuit lines and reducing circuit cost. In other embodiments of the present application, the length of the short-circuit line 2 may specifically be other forms such as a quarter-wavelength plus an integer multiple of a half-wavelength line, and only the short-circuit line 2 is required to open the RF signal. The state is short-circuited to the DC signal.
在一具体实施例中,如图3所示,本发明实施例所涉及的分压模块3具体可以包括电阻R1和电阻R2;其中:In a specific embodiment, as shown in FIG. 3, the voltage dividing module 3 according to the embodiment of the present invention may specifically include a resistor R1 and a resistor R2;
电阻R1的第一端分别与电容C的第一端、天线1连接(即连接于节点B),电阻R1的第二端与分压模块3的第三端(即节点A)连接。The first end of the resistor R1 is respectively connected to the first end of the capacitor C, the antenna 1 (ie, connected to the node B), and the second end of the resistor R1 is connected to the third end of the voltage dividing module 3 (ie, the node A).
电阻R2的第一端与节点A连接,电阻R2的第二端与电源VCC连接。The first end of the resistor R2 is connected to the node A, and the second end of the resistor R2 is connected to the power source VCC.
那么在图3所示实施例中,当天线没有接上即不在位的时候,基站输出端口即天线1对直流呈开路状态,此刻电阻R2是没有电流通过的,即没有压降,那么A点的电压和电源VCC相等;当天线1接上即在位的时候,直流信号通过基站输出端口和短路线2即四分之一波长线连接至地,形成回路,从而在电阻R2上产生了电流,大小为VCC/(R1+R2),电阻R2上产生压降,A点的电压为R1*VCC/(R1+R2)。检测模块4通过检测A点的电压变化,可以判断天线是否在位。Then, in the embodiment shown in FIG. 3, when the antenna is not connected or is not in place, the base station output port, that is, the antenna 1 is open to DC, and at this moment, the resistor R2 has no current, that is, there is no voltage drop, then the point A The voltage is equal to the power supply VCC; when the antenna 1 is connected or in place, the DC signal is connected to the ground through the base station output port and the short-circuit line 2, that is, the quarter-wave line, forming a loop, thereby generating a current on the resistor R2. The size is VCC/(R1+R2), a voltage drop occurs across the resistor R2, and the voltage at point A is R1*VCC/(R1+R2). The detecting module 4 can determine whether the antenna is in position by detecting the voltage change at point A.
为了防止直流信号损坏基站侧的其他器件,本发明实施例中通过设置电容C起到反向隔离的作用。电容C的第二端具体可与基站内的射频信号发射单元连接。In order to prevent the DC signal from damaging other devices on the base station side, the capacitor C is set to function as a reverse isolation in the embodiment of the present invention. The second end of the capacitor C can be specifically connected to the radio frequency signal transmitting unit in the base station.
本发明实施例中,电容值的选取可按照一般射频电路隔直电容设计原则,例如1000pf,这里就不再赘述。In the embodiment of the present invention, the selection of the capacitance value may be in accordance with a general RF circuit blocking capacitance design principle, for example, 1000 pf, which will not be described herein.
本发明实施例中,电阻的设计需按照下面三个原则:In the embodiment of the invention, the design of the resistor is to follow the following three principles:
1、需要保证在电源电压为设定值时,电阻上的实际功率不超过电阻封装能够承受的最高值。
1. It is necessary to ensure that when the power supply voltage is at the set value, the actual power on the resistor does not exceed the highest value that the resistor package can withstand.
以电源VCC的电压为2.5V,电阻R1的阻值为1K欧姆,电阻R2的阻值为20K欧姆为例,当天线在位时,电阻上的电流为I=2.5/(1+20)=0.1190mA,因此电阻R1上的功率为I*I*R1=0.0141mW,R2上的功率为I*I*R2=0.28345mW,而一般0402封装的电阻承受的功率在60mW左右,从而满足要求1。Take the voltage of the power supply VCC as 2.5V, the resistance of the resistor R1 as 1K ohm, and the resistance of the resistor R2 as 20K ohm. For example, when the antenna is in position, the current on the resistor is I=2.5/(1+20)= 0.1190mA, so the power on the resistor R1 is I*I*R1=0.0141mW, and the power on R2 is I*I*R2=0.28345mW, while the power of the 0402 package is generally about 60mW, which satisfies the requirement 1. .
2、电阻R1和电阻R2的阻值需要尽量大,至少大于射频信号生成电路的阻抗,这样不会影响射频信号生成电路的正常工作。2. The resistance of the resistor R1 and the resistor R2 needs to be as large as possible, at least larger than the impedance of the RF signal generating circuit, so that the normal operation of the RF signal generating circuit is not affected.
举例说明,常见的射频信号生成电路的阻抗为50欧姆,则本发明实施例中,电阻R1和电阻R2的阻值之和应远大于50欧姆,同样以电阻R1的阻值为1K欧姆,电阻R2的阻值为20K欧姆为例,则电阻R1和电阻R2的阻值之和为21K欧姆,远大于50欧姆,两者差值很大,因此本发明实施例所提供的天线在位检测阻值的加入,不会影响基站与天线的匹配以及基站的正常工作。For example, the impedance of the common RF signal generating circuit is 50 ohms. In the embodiment of the present invention, the sum of the resistances of the resistor R1 and the resistor R2 should be much larger than 50 ohms, and the resistance of the resistor R1 is 1K ohm. For example, the resistance value of R2 is 20K ohms, and the sum of the resistances of the resistors R1 and R2 is 21K ohms, which is much larger than 50 ohms, and the difference between the two is large. Therefore, the antenna in-position detection resistance provided by the embodiment of the present invention is The addition of values does not affect the matching between the base station and the antenna and the normal operation of the base station.
3、电阻R2的阻值要尽量大于电阻R1的阻值,从而保证节点A的电压变化足够大,以便于检测模块4可以很容易检测到节点A的电压。3. The resistance of resistor R2 should be greater than the resistance of resistor R1, so as to ensure that the voltage change of node A is large enough, so that the detection module 4 can easily detect the voltage of node A.
举例说明(具体参数同上),当天线不在位时,节点A的电压为2.5V,当天线在位时,A点的电压为:I*R1=0.1190*1=0.1190V,两者差值较大,从而可以使检测模块4可以很容易检测到电压的变化。For example (the specific parameters are the same as above), when the antenna is not in position, the voltage of node A is 2.5V. When the antenna is in position, the voltage at point A is: I*R1=0.1190*1=0.1190V. Large, so that the detection module 4 can easily detect the change in voltage.
本发明实施例所涉及的检测模块4,具体可表现为一检测器件或检测电路,该检测器件或电路不但可实现节电A处电压的检测,还可实现电压值显示,电压值存储及传输等功能。The detecting module 4 according to the embodiment of the present invention may be embodied as a detecting device or a detecting circuit. The detecting device or the circuit can not only realize the voltage detection at the power saving A, but also realize the voltage value display, the voltage value storage and the transmission. And other functions.
本发明实施例所涉及的检测模块4,具体独立设置于基站内,或者集成设置于基站内的数字中频单元之中。The detecting module 4 according to the embodiment of the present invention is specifically disposed in the base station or integrated in the digital intermediate frequency unit in the base station.
上述本发明实施例所提供的天线在位检测装置,通过设置基站处以及天线处的器件的结合使用,可简单有效的进行天线在位检测。The antenna in-position detecting apparatus provided in the above embodiment of the present invention can perform antenna in-position detection simply and efficiently by setting a combination of devices at the base station and the antenna.
本发明实施例还提供了一种天线在位检测方法,如图4所示,具体可以包括:The embodiment of the present invention further provides an antenna in-position detection method, as shown in FIG. 4, which may specifically include:
按预设周期,获取分压模块第三端的电压值;Obtaining the voltage value of the third end of the voltage dividing module according to a preset period;
基于所述电压值与预设值之间的关系,确定天线是否在位。Based on the relationship between the voltage value and the preset value, it is determined whether the antenna is in position.
本发明实施例在具体实现时,可事先确定预设值。为了保证检测的准确性,本发明实施例所涉及的预设值X具体可大于检测到的天线在位时分压模块3的第三端即节点A的电压,小于检测到的天线不在位时分压模块3的第三端的电压。例如,天线在位时A点电压为0.1190V,不在位时A点电压为2.5V,那么上述预设值X可小于2.5V,大于0.1190V。在一具体实施例中,预设值具体可为2V。In the specific implementation of the embodiment of the present invention, the preset value may be determined in advance. In order to ensure the accuracy of the detection, the preset value X involved in the embodiment of the present invention may be greater than the voltage of the node A, which is the third end of the voltage divider module 3 when the detected antenna is in position, and is less than when the detected antenna is not in position. The voltage at the third end of the voltage divider module 3. For example, when the antenna is in position, the voltage at point A is 0.1190V, and when the voltage at point A is 2.5V, the preset value X can be less than 2.5V and greater than 0.1190V. In a specific embodiment, the preset value may specifically be 2V.
那么,当节点A的电压大于预设值时,判断天线不在位;当节点A的电压小于预设值时,判断天线在位。Then, when the voltage of the node A is greater than the preset value, it is determined that the antenna is not in the bit; when the voltage of the node A is less than the preset value, it is determined that the antenna is in position.
下面以附图4为例,对本发明实施例提供的天线在位检测方法的一个具体实现过程进行详细的描述。
A specific implementation process of the antenna in-position detection method provided by the embodiment of the present invention is described in detail below with reference to FIG. 4 as an example.
当基站上电后,首先完成***的初始化,然后进入循环检测流程,按照预设的时间间隔,获取节点A的电压,并判断该电压值是否大于预设值,如果大于预设值,则判断天线不在位,然后再次进入检测流程;反之,则判断天线在位,然后再次进入检测流程。After the base station is powered on, first complete the initialization of the system, and then enter the loop detection process, obtain the voltage of the node A according to the preset time interval, and determine whether the voltage value is greater than a preset value, and if it is greater than the preset value, determine The antenna is not in position, and then enters the detection process again; otherwise, it determines that the antenna is in place and then enters the detection process again.
本发明实施例还提供了一种基站,该基站具体可以包括上述本发明实施例提供的天线在位检测装置。该基站具体可为宏基站、微基站等无线基站。The embodiment of the present invention further provides a base station, which may specifically include the antenna in-position detecting apparatus provided by the foregoing embodiment of the present invention. The base station may specifically be a radio base station such as a macro base station or a micro base station.
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和替换,这些改进和替换也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention. It should also be considered as the scope of protection of the present invention.
本申请的天线在位检测装置和方法可应用于基站中,通过设置短路线、分压模块及检测模块,并由检测模块通过检测分压模块第三端的电压,以确定天线是否在位,可准确实现天线在位情况的检测,具有结构简单、工作稳定、占用面积小、适用范围广等特点。
The antenna in-position detecting apparatus and method of the present application can be applied to a base station by setting a short-circuit line, a voltage dividing module and a detecting module, and the detecting module detects the voltage of the third end of the voltage dividing module to determine whether the antenna is in position. Accurately realize the detection of the position of the antenna, which has the characteristics of simple structure, stable operation, small occupied area and wide application range.
Claims (10)
- 一种天线在位检测装置,包括:An antenna in-position detecting device includes:第一端与天线连接,第二端与地连接的短路线,所述短路线对射频信号呈现开路状态,对直流信号呈现短路状态;The first end is connected to the antenna, and the second end is connected to the short circuit of the ground, and the short-circuit line presents an open state to the radio frequency signal, and presents a short-circuit state to the DC signal;第一端分别与电容第一端、天线连接,第二端与电源连接的分压模块;a first end is respectively connected to the first end of the capacitor, the antenna, and the second end is connected to the power supply by a voltage dividing module;与分压模块第三端连接的检测模块,所述检测模块通过检测所述第三端的电压,确定天线是否在位。And a detecting module connected to the third end of the voltage dividing module, wherein the detecting module determines whether the antenna is in position by detecting the voltage of the third end.
- 如权利要求1所述的装置,其中,所述短路线的长度为四分之一波长或者为四分之一波长加上二分之一波长的整数倍,所述波长为天线需要发送的射频信号的波长。The apparatus according to claim 1, wherein said short-circuit line has a length of a quarter wavelength or a quarter-wavelength plus an integral multiple of a half-wavelength, said wavelength being an RF which the antenna needs to transmit The wavelength of the signal.
- 如权利要求1所述的装置,其中,所述分压模块包括第一电阻和第二电阻;其中:The device of claim 1 wherein said voltage divider module comprises a first resistor and a second resistor; wherein:所述第一电阻的第一端分别与电容第一端、天线连接,所述第一电阻的第二端与所述第三端连接;The first end of the first resistor is respectively connected to the first end of the capacitor and the antenna, and the second end of the first resistor is connected to the third end;所述第二电阻的第一端与所述第三端连接,所述第二电阻的第二端与所述电源连接。The first end of the second resistor is connected to the third end, and the second end of the second resistor is connected to the power source.
- 如权利要求1所述的装置,其中,所述第一电阻和第二电阻的阻值大于射频信号生成电路的阻抗;和/或The device of claim 1, wherein the resistance of the first resistor and the second resistor is greater than an impedance of the radio frequency signal generating circuit; and/or所述第二电阻的阻值大于所述第一电阻的阻值。The resistance of the second resistor is greater than the resistance of the first resistor.
- 如权利要求1所述的装置,其中,所述电容的第二端与基站***频信号发射单元连接。The apparatus of claim 1 wherein the second end of the capacitor is coupled to a radio frequency signal transmitting unit within the base station.
- 如权利要求1-5任一项所述的装置,其中,所述电源的电压为2.5V,所述第一电阻的阻值为1K欧姆,所述第二电阻的阻值为20K欧姆,所述电容的容值为1000pf。The device according to any one of claims 1 to 5, wherein the voltage of the power source is 2.5 V, the resistance of the first resistor is 1 K ohm, and the resistance of the second resistor is 20 K ohm. The capacitance of the capacitor is 1000pf.
- 一种天线在位检测方法,应用于权利要求1-6任一项所述的天线在位检测装置,该方法包括:An antenna in-position detecting method is applied to the antenna in-position detecting apparatus according to any one of claims 1 to 6, the method comprising:按预设周期,获取分压模块第三端的电压值;Obtaining the voltage value of the third end of the voltage dividing module according to a preset period;基于所述电压值与预设值之间的关系,确定天线是否在位。Based on the relationship between the voltage value and the preset value, it is determined whether the antenna is in position.
- 如权利要求7所述的方法,其中,所述基于所述电压值与预设值之间的关系,确定天线是否在位包括:The method of claim 7, wherein the determining whether the antenna is in place based on a relationship between the voltage value and a preset value comprises:当所述电压值大于预设值时,判断天线不在位; When the voltage value is greater than a preset value, determining that the antenna is not in position;当所述电压值小于预设值时,判断天线在位。When the voltage value is less than the preset value, it is determined that the antenna is in position.
- 如权利要求7或8所述的方法,其中,所述方法在获取分压模块第三端的电压值之前还包括:The method according to claim 7 or 8, wherein the method further comprises: before acquiring the voltage value of the third end of the voltage dividing module:确定所述预设值;Determining the preset value;所述预设值大于检测到的天线在位时所述第三端的电压,小于检测到的天线不在位时所述第三端的电压。The preset value is greater than a voltage of the third end when the detected antenna is in position, and is less than a voltage of the third end when the detected antenna is not in position.
- 一种基站,其特征在于,包括如权利要求1-6任一项所述的天线在位检测装置。 A base station, comprising the antenna presence detecting device according to any one of claims 1-6.
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CN107643468A (en) * | 2017-09-29 | 2018-01-30 | 惠州华阳通用电子有限公司 | A kind of alarm validation checking circuit and method |
CN109946528A (en) * | 2017-12-20 | 2019-06-28 | 中国电信股份有限公司 | Antenna detection circuit in place, methods, devices and systems, wireless terminal |
CN109444639A (en) * | 2018-11-28 | 2019-03-08 | 京信通信***(中国)有限公司 | Feeder line condition detecting device, method and device |
CN112468241B (en) * | 2020-11-11 | 2022-05-13 | 深圳国人无线通信有限公司 | Antenna management device for 5G small base station |
CN112887950B (en) * | 2021-01-20 | 2023-05-23 | 维沃移动通信有限公司 | Detection circuit, near field communication NFC function control method and electronic equipment |
CN113095519B (en) * | 2021-04-09 | 2023-11-10 | 北京东方博泰正通通信工程有限责任公司 | Integrated base station antenna |
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